Home / 260,971.20-391,451.13-83,477.68

Finding the Fourth Proportional to 260,971.20, 391,451.13 and 83,477.68

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Solution

The fourth proportional to 260,971.20, 391,451.13 and 83,477.68 is: 125,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,971.20 : 391,451.13 = 83,477.68 : x
  2. Step 2: Convert to fraction form
    260,971.20/391,451.13 = 83,477.68/x
  3. Step 3: Cross multiply
    260,971.20x = 391,451.13 × 83,477.68
  4. Step 4: Simplify right side
    260,971.20x = 32,677,431,187.15
  5. Step 5: Solve for x
    x = 32,677,431,187.15/260,971.20
  6. Step 6: Final answer
    x = 125,214.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.